CI: save Github action workflow artifacts

Author: wkliao

.github/workflows/end_to_end_pytest.yml

@@ -55,3 +55,9 @@ jobs:
           export DARSHAN_ROOT_PATH=$PWD
           export HDF5_LIB=/usr/lib/x86_64-linux-gnu/hdf5/openmpi/libhdf5.so
           python -m pytest -s darshan-test/python_runtime_tests.py
+      - name: Archive Darshan log files
+        uses: actions/upload-artifact@v4
+        with:
+          name: logs
+          path: /tmp/pytest-of-runner/pytest-0/test_os_dup0/*
+